package Person;

import java.util.Scanner;

public class zimuzhuanhuan {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        char[] c = new char[line.length()];
        for(int i=0;i<line.length();i++){
            c[i]=line.charAt(i);
            if(c[i]>=65&&c[i]<=90)
            {
                int j = (int)c[i]+32;
                System.out.println((char)j);
            }
        }
    }
}
